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Old 10-19-2005, 11:41 AM   #1
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Join Date: Jul 2005
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Oil in the propane line and a connecting hose

I'm replacing all the old propane items on my '87 29' that I've had for a little over two weeks. I was installing the two stage regulator and high pressure lines when I noticed oil dripping form the rubber hose that threaded into the regulator. Should the oil be cleaned from the system or is this normal? After closer inspection the rubber line seemed to be a little "soft", probably from the oil. The two local RV dealers did not show this part in thier catalogs, so they say it doesn't exist. It appears to be a 3/8" NPT on one end and a 1/2 flare on the other end of a rubber line. Is this and Airstream exclusive? Any thoughts on the oil or where to purchase a new line are apprecieated.

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Old 10-19-2005, 12:49 PM   #2
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Doug, the oil is perfectly normal. This oil is the reason that the flexible pipes should lead upwards to the regulator, so that the regulator is not contaminated by the oil. For a small charge, propane suppliers will "purge" your tanks to clear out any residues. You might like to do this every ten fills or so.
To obtain the fitting you describe, after failing at an Airstream dealer, I found a fitter at the local main propane distributor and got him to sort out the connections from his supply from the back of his truck. It involved several fittings in series to make the change in size. Good luck in your hunt.

Nick Crowhurst, Excella 25 1988, Dodge Ram 2500 Cummins Diesel. England in summer, USA in winter.
"The price of freedom is eternal maintenance."
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Old 10-20-2005, 08:50 AM   #3
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Thanks for the reply. It's good to know that it is normal. I'm still having difficulty in finding the hose. The local Airstream parts guy, there must be only one, won't be back until Monday so I may have to wait this one out. The local propane company didn't sell any parts. I love a scavenger hunt.
Thanks again,
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